:root{
  --bg:#05060a;
  --panel:rgba(255,255,255,.08);
  --border:rgba(255,255,255,.14);
  --text:rgba(255,255,255,.96);
  --muted:rgba(255,255,255,.65);
  --accent:#38bdf8;
  --accent-soft:rgba(56,189,248,.25);
  --radius:18px;
  --shadow:0 30px 80px rgba(0,0,0,.6);
}

*{box-sizing:border-box}
html,body{margin:0;height:100%}

body{
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,-apple-system,"SF Pro Text","SF Pro Display",
              Segoe UI,Roboto,Helvetica,Arial;
  -webkit-font-smoothing:antialiased;
}

#scene{
  position:fixed;
  inset:0;
  z-index:0;
}

.overlay{
  position:fixed;
  inset:0;
  display:flex;
  justify-content:center;
  pointer-events:none;
  z-index:1;
}

.panel{
  position:absolute;
  top:18vh;
  width:min(920px,calc(100% - 32px));
  padding:28px 32px;
  background:linear-gradient(135deg,rgba(255,255,255,.12),rgba(255,255,255,.04));
  border-radius:var(--radius);
  border:1px solid var(--border);
  box-shadow:var(--shadow);
  backdrop-filter:blur(18px);
  opacity:0;
  transform:translateY(12px) scale(.98);
  transition:.45s ease;
}

.panel.active{
  opacity:1;
  transform:none;
  pointer-events:auto;
}

.top-nav{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:10;
}

.nav-inner{
  max-width:1100px;
  margin:14px auto;
  padding:10px 16px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  background:rgba(10,12,18,.55);
  backdrop-filter:blur(14px);
  border-radius:16px;
  border:1px solid rgba(255,255,255,.12);
}

.top-nav button{
  background:none;
  border:none;
  color:var(--muted);
  font-weight:500;
  cursor:pointer;
  padding:6px 8px;
  border-radius:8px;
}

.top-nav button:hover{
  color:#fff;
}

.top-nav button.active{
  color:var(--accent);
  box-shadow:0 0 0 2px var(--accent-soft);
}

.accent{color:var(--accent)}
.lead{color:var(--muted)}
.muted{color:var(--muted)}
.btn{
  display:inline-block;
  margin-top:16px;
  padding:12px 16px;
  border-radius:14px;
  background:var(--accent-soft);
  border:1px solid var(--accent);
  color:#fff;
  text-decoration:none;
}

.terminal{
  font-family:ui-monospace,SFMono-Regular,Menlo;
  color:var(--muted);
}
.prompt{color:var(--accent)}
.path{color:#a5f3fc}
.dim{opacity:.5}
.caret{animation:blink 1s steps(2,end) infinite}
@keyframes blink{50%{opacity:0}}